St.Nicolas Cathedral retains substantial elements of medieval fabric as well as evidence of its development over a number of historical periods, with examples of work by prominent architects including Daniel Garrett, John and Benjamin Green, John Dobson, and George Gilbert Scott. Internally the Cathedral contains one of the largest collections of monuments and ledger stones of any cathedral in England; it also boasts medieval heraldic bosses, a fine wooden font cover with elaborate Gothic tracery, a superb collection of nineteenth and twentieth century stained glass and other outstanding examples of local craftsmanship such as the wooden screens and choir stalls which were carved in medieval style by Ralph Hedley in the mid-19th Century prior to the building becoming England’s most northerly cathedral.